The Differences Between GA4 and Universal Analytics

The main difference is the unit of measurement and the way that nature is collected. All other versions of analytics have always been based on hits and some event tracking. Everything in GA4 is now an event, so anything that happens within Google Analytics 4 is an event. And so that does mean that there's discrepancies between,. You'll find if you run GA4 alongside Universal, you're going to see some differences in the session data.